6V4Ah 4.5Ah 5Ah Small Size Rechargeable Backup Power Battery Product Overview WEESUN 6V4AH is a sealed maintenance-free lead-acid battery featuring a valve-regulated sealed structure that eliminates the need for electrolyte refilling during operation, ensuring safe and easy use. This battery supports both cycle use and standby float charge modes, operating optimally within 15-35℃ with a maximum initial charging current of 1.2A. Widely compatible with kids ride-on cars,